This 4' wide sliding door kit provides a trusted and secure access point into any of our 6 foot high Machine Guarding systems. The kit comes with a 4' wide x 6' 8" high door (actual opening dimensions of 4' wide x 8' 1/4" high) with a 5-1/4" sweep (bottom gap to floor), and includes necessary posts and a header tube for strength and stability. This door kit can replace existing posts and panel of equal size or can easily be added into a new Machine Guarding system utilizing our many post, panel, and door options. Want a different sized door? Be sure to check out our additional sizes and styles to build the ideal system to protect your machinery, employees, or facility. Our Machine Guarding posts, panels, and doors are USA-made and are constructed, palletized, and shipped in 5-6 business days. Our unique Machine Guarding system Lift-Off design allows for the removal of guards (panels) while the fixing system (hardware) remains attached to the guards (post), in compliance with RIA TR R15.406.